What's changed is the introduction of "bit miles" as a means of
calculating equality, where traffic ratios might previously have been
used. Explained further, as pointed out on-list earlier:
http://fjallfoss.fcc.gov/ecfs/document/view?id=7021703819
http://fjallfoss.fcc.gov/ecfs/document/view?id=7021703818
What will be interesting is whether new peering adjacencies crop up as
a result of the new policy (I can think of several "smaller" global
networks which now qualify, as it's written), or if this is just
posturing on Level 3's part. The next few months will be interesting
for sure...